I got the head unit changed in my Subaru . In the Subaru, the systems that the Head Unit controls (entertainment system, backup cam, Sat NAV) are totally separate from critical systems. So everything the head unit controls can fail and the car will still work.
And you’re right, there’s an interface/translation layer . In my case the guy used an iDataLink Maestro. It seems the only thing the iDataLink company does provide interfaces that allow head units to talk to car computers, so that the Head unit manufacturers don’t have to bother.
I’m not sure such separation is common in EVs.
pastermil@sh.itjust.works 1 week ago
Putting your vehicle main control inside the head unit is absurd to begin with.
ChapulinColorado@lemmy.world 1 week ago
Right, not sure why the steering wheel controls would even come into play. Android auto and Apple car play units from 2014 that I bought can directly accept the industry standard steering wheel controls cars use. I was able to use this stereo in a Honda from 06 and a Subaru from 2015. There are also wireless adapters for cars that didn’t have the feature from the factory. If it broke it was a conscious decision.